File:Magnesium_oxide.jpg · Wikimedia Commons · See Wikimedia Commons
magnesium oxide
Sign in to saveAlso known as magnesia, MgO, Magmitt
chemical compound naturally occurring as periclase
Magnesium oxide is a chemical compound that occurs naturally in a mineral form called periclase. It's a useful industrial material with applications in various manufacturing processes, though specific details about those uses would require additional information.
AI-generated from the Wikipedia summary — may contain errors.
Chemical data
- Formula
- MgO
- Molecular weight
- 40.305 g/mol
- IUPAC name
- oxomagnesium
- SMILES
- O=[Mg]
- InChIKey
- CPLXHLVBOLITMK-UHFFFAOYSA-N
- Polar surface area
- 17.1 Ų
- H-bond donors
- 0
- H-bond acceptors
- 1
- Formal charge
- 0
via PubChem
Wikidata facts
- Mass
- 39.979956
- Image
- Magnesium oxide.jpg
Show 16 more facts
- Commons category
- Magnesium oxide
- chemical formula
- MgO
- canonical SMILES
- O=[Mg]
- solubility
- 0.009
- NIOSH Pocket Guide ID
- 0374
- density
- 3.58
- immediately dangerous to life or health
- 750
- melting point
- 2826
- boiling point
- 6512
- vapor pressure
- 0
- time-weighted average exposure limit
- 15
- standard enthalpy of formation
- -601.8
- defined daily dose
- 7
- standard molar entropy
- 26.9
- ionization energy
- 9.70
- 2022 Harmonized System Code
- 251990
Sources (7)
via Wikidata · CC0
~10 min read
Article
Magnesium oxide (MgO), or magnesia, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of magnesium (see also oxide). It has an empirical formula of MgO and consists of a lattice of Mg ions and O ions held together by ionic bonding. Magnesium hydroxide forms in the presence of water (MgO + H2O → Mg(OH)2), but it can be reversed by heating it to remove moisture.
Magnesium oxide was historically known as magnesia alba (literally, the white mineral from Magnesia), to differentiate it from magnesia nigra, a black mineral containing what is now known as manganese.